This is an encrusting Cyphastrea that glows a deep red with bright yellow-green polyps under blue lights. The same spotted pattern is still visible under daylights.
Like all Cyphastrea, these do best in low to moderate light, with plenty of nutrients.
The frag you purchase will come from the same lineage as the image shown, and will be similar in size. However, because of natural variation among frags yours may not look identical to this image.
Like all hard corals, this requires overnight shipping.